Add xfail test for #9336 #6678

Job	Run time
Linter	1m 6s
Generate llhttp sources	10s
Test (3.9, ubuntu, false)	9m 35s
Test (3.9, macos, false)	5m 56s
Test (3.9, windows, false)	6m 39s
Test (3.9, Y, ubuntu, false)	7m 21s
Test (3.10, ubuntu, false)	6m 1s
Test (3.10, macos, false)	4m 56s
Test (3.10, windows, false)	6m 42s
Test (3.10, Y, ubuntu, false)	6m 58s
Test (3.11, ubuntu, false)	5m 43s
Test (3.11, macos, false)	4m 29s
Test (3.11, windows, false)	7m 6s
Test (3.11, Y, ubuntu, false)	7m 12s
Test (3.12, ubuntu, false)	5m 59s
Test (3.12, macos, false)	5m 3s
Test (3.12, windows, false)	6m 34s
Test (3.12, Y, ubuntu, false)	7m 56s
Test (3.13, ubuntu, false)	6m 6s
Test (3.13, macos, false)	4m 57s
Test (3.13, windows, false)	8m 6s
Test (3.13, Y, ubuntu, false)	7m 8s
Test (pypy-3.9, Y, ubuntu, false)	13m 59s
Test (ubuntu, 3.14, true, Y)	2m 37s
check	9s
Pre-Deploy	0s
Tarball	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }}	0s
Deploy	0s
	2h 28m 28s

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